Foldable box



June 24, 1930. A. E. BROWN 1,767,733

FOLDABLE BOX Filed F'eb. 2l, 1929 Patented June 24', 1930 UNITED STATES MT1-:NT OFFICE ARTHUR EMLEN BROWN, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR T0 BROWN 8G BAILEY COMPANY, A CORPORATION OF PENNSYLVANIA FOLDABLE BOX application med February 21, 1929. smal No. 341,5s2.

Thisl invention relates to improvements in foldable boxes, and more particularly has to do with boxes which are formed from a single blank of sheet material vsuch as pa er', cardboard, or the like.k

n object of the present invention is to provide a box which when folded to normall conditions of use requires no external gummed fastening means such as strin e same 1n tape or the like to maintain t folded condition.

Another object of the present invention is to provide a box of simple,.eiicient and durable construction which is capable of receiving relatively rough handling Without v mutilation.

vfrom the stock and injured and'which when x a rm closure without the necessity of gluing or otherwise adhesively securing any being understood that minor variations of the parts to each other.

vOther objects and advantages of the present construction will be clearly apparent from the following description, it be resorted to without departing from the scope or Ispirit of the present invention as defined in the appended claims. f

In describing the present invention, 'reference will be had to the accompanying drawings, forming a part hereof, and in which,

Fig. 1 is a plan view of the blank emplflizyed in carrying out my invention.

ig 2 is a perspective view, portions thereof being shown in dotted lines to indicate the manner of assembling.

Fig. 3 is a sectional view along the line 2-2 of Fig. 2, with the top portlon of the box broken away to more clearly illustrate the interior construction.

vReferring more particularly to the drawings, I- provide a top section 1 and a bottom of a side wall 3 formed along the line 7,

may v section 2, here illustrated as being of rectangular formation,

by scoring the blank along the lines 4 and 5. The opposite side wall of the box construction-is provided 4by means of the section 6 produced by scoring and which forms an extension of the top Wall 1 and cooperates therewith to 'produce the said side wall, and the section 8, produced by scoring along the line 9, and which forms an extension of the bottom section 2. It will be readily understood'from -the foregoing that the top and bottom sections 1 and 2 are folded at angles with reference to the side wall 3 and that the side wall sections 6 and 8 are bent along the score lines 7 and 9, so that the side wall section 8 underlies the side wall section 6, thereby providing at one side of the box a wall comprising a plurality -of layers, which produces a rigid structure.

In the side wall section 6 I provide an elongated slot 10 which is ada ted to receive a tongue 11 cut out of the side wall section 8 and extending from the score line 9 to a point adjacent the edge of the side wall section 8. By forming the tongue 11 in the manner described, it will be seen that a sec-4 tion of the blank immediatel to one side of the opening produced by t e tongue 11, as indicated at 12, remains integral with the side wall section 8, thereby preservin the strength of the box where it Woul otherwise be weakened due to the punching out of the tongue 11.

It will be understood from the vforegoing that when in folded condition the side wall l it is to be un erstood I may employ -laterright Y ally projecting ears on the said tongue, forming in effect an arrowhead, the shoulders of which are adapted to engage the walls of the side section 6 after the same has been assed through the openin 10.

Integralbwith the side wall 3 and t e side wall sections 6 and 8 are the usual corner flaps, indicated at 13, which are adapted to be folded inwardly at right angles to the side wall sections 3, 6 and 8, thereby partially forming an enclosure for the box at opposite ends thereof.

To complete the formation of the end l walls of the box, I provide laterally extending flaps 14 and 15 produced by scoring the blank formin the top section 1 along the lines 16 and 1 and when the box is in foldedposition these flaps 14 and 15 are positioned to extend downwardly at right angles with reference to the top section 1, as clearly indicated in Fig. 2.

The end flaps 14 and 15 are slotted as at 18 and 19 to form interlocking tongues 20 and 21, and intermediate the tongues 20 and 21 the end wall flaps 14 and 15 are provided with elongated slots 22 and 23, the purpose lof which will be hereinafter described.

On the bottom section 2 I provide laterally extending iiaps 24 and 25, produced by scoring .the bottom section 2 along the lines 26 and 27, it being understood that when in assembled position the flaps 24 and 25 extend vertically upward at right angles to the bottom section 2, as is also clearly il- Ylustrated in Fig. 2.

Each end section is provided with a plurality of elongated slots, Las indicated at 28 and 29, and intermediate the slots 28 and 29 I provide a tongue 30 punched from the said aps 24 and 25 and extending from the score lines 26 and 27 to a oint adjacent the edge of the said flaps. Ks reviously described infconnection with t e tongue 11, the tongues 30 are punched directly from the side aps 24 and 25, thereby leaving the sections 31 and 32 to one side of the tongues v 30 so that the flaps 24 and 25 retain their rigidit and are not weakened by the formation o the tongues 30.

The manner in which the box is assembled is as follows:

.Having folded the top and bottom sections 1 and 2 at right angles to the side wall section 3 and having engaged the tongue 11 with the slot 10 so as to secure the side wall sections 6 and 8 in position, as illustrated and described, the corner flaps 13 are bent inwardly at right angles to the side wall sections, and the end wall flaps 24 and 25 are bent upwardly along the score lines 26 and 27 at right angles to the bottom sect1on 2, the tongues 30, however, remaining 1n 'horizontal position. The end wall sections 14 and 15 are then bent downwardly vertically at right angles to the top section 1 pletely formed, with the end walls securely locked in position without the necessity of employing glue, string, gummed tape or any other external fastening means.

As in the case of the tongue 11, the tongues 30 on the bottom section 2 may be formed of arrowhead construction, so that when passed through the openings 22 and 23 the shoulders of such construction will prevent dislodgment Kof the tongues from the openings. It is believed to be clear from the description that the box is held mation during the assembling operation by means of the single fastening elements 10 and 11 at one side of the box, and that the end walls of the box are interlocked at three spaced points along-the ends thereof, so that a rigid end wall construction is produced.

. It will also be apparent that by providing a box of this character the top and bottom walls are unobstructed and can be fully u tilized for displaying advertising or similar printed matter, since the surfaces presented are unbroken throughout the entire length and width of the box.

From the foregoing it is believed to be clearly apparent that I have produced a box which is lofA exceedingly simple character .and which is formed from a single blank of suitable material and which permits the box to b e very uickly and easily assembled and locked so t at it can be handled roughly without disengaging the interlocked portions thereof, and which forms a comparatively rigid. construction, and furthermore, that tlie blanks from which the present invention is formed may be shipped in a fiat condition, thereby eliminating the possibility of 1n]ury to the blanks in transit.

What is claimed is: .o

1. A box construction'comprising a single blank of sheet material having top, bottom, side and end sections', the end sections being carried by the top and bottom sections and the tongues on the end sections carried by the to and a tongue on the end section carrie by the bottom adapted tol pass through the slot in the end section carried by the tgp.

2. box construction formed of a single blank of sheet material having top, bottom,-

side and end sections, the side sections at one side of the box comprising overlapping in tubular for-A panels, one ofv'which is provided with a -slot intermediate of its length and the other carrying a tongue adapte to pass through said slot when the said side sections are over-` lapped, and the end sections being carried by` the top and bottom sections and adapted vto be folded into overlapping'relation, the end sections on ,the top havin spaced tongues and a slot t erebetween, and the end sections on the bottom having a plurality'of spaced slots to-receive the tongues on the end sections carried by the to and a tongue on the end section carried Ey the bottom adapted to pass through the slot in the end section carried by'the'top In witness whereof I have hereunto set my hand this 20th day of February, 1929. ARTHUREMLEN BROWN.

a plurality of 

